Last I checked, the administrators are people. It must be possible to talk to them, prior to the domain level action, and ask on what terms they would accept the change?
I mean, in a case where an administrator picked up an additional mantle of an area not his specialty (only "skilled" in that area), to alleviate that need.
Now the Aide, a high level military person, is probably expert or even master, and they add a flat +2?
So, I have to blindly demote the current administrator, and risk losing him from all his current jobs, and gamble that the skill of the aid actually turns out to be better?
This can't be true.
There must be a way to divine more knowledge of the way it will turn out.
1. It must be possible to ask an administrator if he will be troubled if one of his areas are revoked.
2. If the admin seems troubled, surely its possible to give some other bone to alleviate that affront?
3. How on earth do we know the skill level of an aide before firing the old admin?